/// <summary>
/// </summary>
protected virtual void WebBrowserBeforeNavigateHandler(object sender, WebBrowserBeforeNavigateEventArgs e)
{
if (DialogResult == DialogResult.OK)
{
e.Cancel = true;
return;
}
if (_webBrowser.IsDisposed)
{
// we cancel all flows in disposed object and just do nothing, let object to close.
// it just for safety.
e.Cancel = true;
return;
}
if (_key == Keys.Back)
{
//navigation is being done via back key. This needs to be disabled.
_key = Keys.None;
e.Cancel = true;
}
if (string.IsNullOrEmpty(e.Url))
{
RequestContext.Logger.Verbose("[Legacy WebView] URL in BeforeNavigate is null or empty.");
e.Cancel = true;
return;
}
Uri url = new Uri(e.Url);
// we cancel further processing, if we reached final URL.
// Security issue: we prohibit navigation with auth code
// if redirect URI is URN, then we prohibit navigation, to prevent random browser pop-up.
e.Cancel = CheckForClosingUrl(url, e.PostData);
// check if the URL scheme is of type browser-install://
// this means we need to launch external browser
if (url.Scheme.Equals("browser", StringComparison.OrdinalIgnoreCase))
{
Process.Start(url.AbsoluteUri.Replace("browser://", "https://"));
e.Cancel = true;
}
if (!e.Cancel)
{
string urlDecode = CoreHelpers.UrlDecode(e.Url.ToString());
RequestContext.Logger.VerbosePii(
string.Format(CultureInfo.InvariantCulture, "[Legacy WebView] Navigating to '{0}'.", urlDecode),
string.Empty);
}
}
public void BeforeNavigate2(object pDisp, ref object url, ref object flags, ref object targetFrameName,
ref object postData, ref object headers, ref bool cancel)
{
string urlString = (url == null) ? string.Empty : ((string)url);
int flagsInt = (flags == null) ? 0 : ((int)flags);
string targetFrameNameString = (targetFrameName == null) ? string.Empty : ((string)targetFrameName);
byte[] postDataBytes = (byte[])postData;
string headersString = (headers == null) ? string.Empty : ((string)headers);
WebBrowserBeforeNavigateEventArgs e = new WebBrowserBeforeNavigateEventArgs(urlString, postDataBytes,
headersString, flagsInt, targetFrameNameString, pDisp);
parent.OnBeforeNavigate(e);
cancel = e.Cancel;
}
/// <summary>
/// </summary>
protected override void WebBrowserBeforeNavigateHandler(object sender, WebBrowserBeforeNavigateEventArgs e)
{
if (null == timer)
{
timer = CreateStartedTimer(
() =>
{
DateTime now = DateTime.Now;
if (now > navigationExpiry)
{
OnUserInteractionRequired();
}
},
NavigationWaitMiliSecs);
}
// We don't timeout each individual navigation, only the time between individual navigations.
// Reset the expiry time so that it isn't relevant until the next document complete.
navigationExpiry = DateTime.MaxValue;
base.WebBrowserBeforeNavigateHandler(sender, e);
}
#pragma warning restore 618
protected virtual void OnBeforeNavigate(WebBrowserBeforeNavigateEventArgs e)
{
BeforeNavigate?.Invoke(this, e);
}
/// <summary>
/// </summary>
protected override void WebBrowserBeforeNavigateHandler(object sender, WebBrowserBeforeNavigateEventArgs e)
{
SetBrowserZoom();
base.WebBrowserBeforeNavigateHandler(sender, e);
}